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Buffer abstraction, fixes multi-character inputs

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This commit is contained in:
Jeremy Soller 2022-10-05 18:32:25 -06:00
parent 3227efef89
commit 98b86ff900
2 changed files with 180 additions and 144 deletions
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1
examples/text/src/font/shape.rs
View file

@ -128,7 +128,6 @@ impl<'a> FontShapeLine<'a> {
line_i: self.line_i,
glyphs
});
layout_i += 1;
}
}
}

323
examples/text/src/main.rs
View file

@ -3,15 +3,113 @@ use std::{
cmp,
env,
fs,
marker::PhantomData,
time::Instant,
};
use text::{
Font,
FontLayoutLine,
FontLineIndex,
FontMatches,
FontShapeLine,
FontSystem,
};
pub struct TextBuffer<'a> {
font_matches: &'a FontMatches<'a>,
text_lines: Vec<String>,
shape_lines: Vec<FontShapeLine<'a>>,
layout_lines: Vec<FontLayoutLine<'a>>,
redraw: bool,
font_size: i32,
line_width: i32,
line_height: i32,
}
impl<'a> TextBuffer<'a> {
pub fn new(font_matches: &'a FontMatches, text: &str, font_size: i32, line_width: i32, line_height: i32) -> Self {
let mut buffer = Self {
font_matches,
text_lines: text.lines().map(String::from).collect(),
shape_lines: Vec::new(),
layout_lines: Vec::new(),
redraw: true,
font_size,
line_width,
line_height,
};
buffer.reshape();
buffer
}
pub fn reshape(&mut self) {
let instant = Instant::now();
self.shape_lines.clear();
for (line_i, text_line) in self.text_lines.iter().enumerate() {
self.shape_lines.push(
self.font_matches.shape_line(FontLineIndex::new(line_i), text_line)
);
}
let duration = instant.elapsed();
eprintln!("reshape: {:?}", duration);
self.relayout();
}
pub fn reshape_line(&mut self, line_i: FontLineIndex) {
let instant = Instant::now();
self.shape_lines[line_i.get()] = self.font_matches.shape_line(line_i, &self.text_lines[line_i.get()]);
let duration = instant.elapsed();
eprintln!("reshape line {}: {:?}", line_i.get(), duration);
self.relayout_line(line_i);
}
pub fn relayout(&mut self) {
let instant = Instant::now();
self.layout_lines.clear();
for line in self.shape_lines.iter() {
let layout_i = self.layout_lines.len();
line.layout(self.font_size, self.line_width, &mut self.layout_lines, layout_i);
}
self.redraw = true;
let duration = instant.elapsed();
eprintln!("relayout: {:?}", duration);
}
pub fn relayout_line(&mut self, line_i: FontLineIndex) {
let instant = Instant::now();
let mut insert_opt = None;
let mut layout_i = 0;
while layout_i < self.layout_lines.len() {
let layout_line = &self.layout_lines[layout_i];
if layout_line.line_i == line_i {
if insert_opt.is_none() {
insert_opt = Some(layout_i);
}
self.layout_lines.remove(layout_i);
} else {
layout_i += 1;
}
}
let shape_line = &self.shape_lines[line_i.get()];
shape_line.layout(self.font_size, self.line_width, &mut self.layout_lines, insert_opt.unwrap());
self.redraw = true;
let duration = instant.elapsed();
eprintln!("relayout line {}: {:?}", line_i.get(), duration);
}
}
fn main() {
let display_scale = match orbclient::get_display_size() {
Ok((w, h)) => {
@ -33,31 +131,6 @@ fn main() {
&[WindowFlag::Resizable]
).unwrap();
#[cfg(feature = "mono")]
let default_text = include_str!("../res/mono.txt");
#[cfg(not(feature = "mono"))]
let default_text = include_str!("../res/proportional.txt");
let mut text_lines: Vec<String> = if let Some(arg) = env::args().nth(1) {
let text = fs::read_to_string(&arg).expect("failed to open file");
text.lines().map(String::from).collect()
} else {
default_text.lines().map(String::from).collect()
};
let bg_color = Color::rgb(0x34, 0x34, 0x34);
let font_color = Color::rgb(0xFF, 0xFF, 0xFF);
let font_sizes = [
(10, 14), // Caption
(14, 20), // Body
(20, 28), // Title 4
(24, 32), // Title 3
(28, 36), // Title 2
(32, 44), // Title 1
];
let font_size_default = 2; // Title 4
let mut font_size_i = font_size_default;
let mut font_system = FontSystem::new();
font_system.add(
Font::new(include_bytes!("../../../res/Fira/FiraSans-Regular.otf"), 0).unwrap()
@ -82,108 +155,60 @@ fn main() {
let font_matches = font_system.matches(font_pattern).unwrap();
let mut shape_lines = Vec::new();
let mut layout_lines = Vec::new();
let bg_color = Color::rgb(0x34, 0x34, 0x34);
let font_color = Color::rgb(0xFF, 0xFF, 0xFF);
let font_sizes = [
(10, 14), // Caption
(14, 20), // Body
(20, 28), // Title 4
(24, 32), // Title 3
(28, 36), // Title 2
(32, 44), // Title 1
];
let font_size_default = 2; // Title 4
let mut font_size_i = font_size_default;
let text = if let Some(arg) = env::args().nth(1) {
fs::read_to_string(&arg).expect("failed to open file")
} else {
#[cfg(feature = "mono")]
let default_text = include_str!("../res/mono.txt");
#[cfg(not(feature = "mono"))]
let default_text = include_str!("../res/proportional.txt");
default_text.to_string()
};
let line_x = 8 * display_scale;
let mut buffer = TextBuffer::new(
&font_matches,
&text,
font_sizes[font_size_i].0 * display_scale,
window.width() as i32 - line_x * 2,
font_sizes[font_size_i].1 * display_scale,
);
let mut cursor_line = 0;
let mut cursor_glyph = 0;
let mut mouse_x = -1;
let mut mouse_y = -1;
let mut mouse_left = false;
let mut redraw = true;
let mut rehit = false;
let mut relayout = true;
let mut relayout_lines = Vec::new();
let mut reshape = true;
let mut reshape_lines = Vec::<FontLineIndex>::new();
let mut scroll = 0;
loop {
let (mut font_size, mut line_height) = font_sizes[font_size_i];
font_size *= display_scale;
line_height *= display_scale;
let font_size = buffer.font_size;
let line_height = buffer.line_height;
let window_lines = (window.height() as i32 + line_height - 1) / line_height;
scroll = cmp::max(0, cmp::min(
layout_lines.len() as i32 - (window_lines - 1),
buffer.layout_lines.len() as i32 - (window_lines - 1),
scroll
));
let line_x = 8 * display_scale;
let line_width = window.width() as i32 - line_x * 2;
if reshape {
let instant = Instant::now();
shape_lines.clear();
for (line_i, text_line) in text_lines.iter().enumerate() {
shape_lines.push(font_matches.shape_line(FontLineIndex::new(line_i), text_line));
}
reshape = false;
reshape_lines.clear();
relayout = true;
let duration = instant.elapsed();
eprintln!("reshape: {:?}", duration);
}
for line_i in reshape_lines.drain(..) {
let instant = Instant::now();
shape_lines[line_i.get()] = font_matches.shape_line(line_i, &text_lines[line_i.get()]);
relayout_lines.push(line_i);
let duration = instant.elapsed();
eprintln!("reshape line {}: {:?}", line_i.get(), duration);
}
if relayout {
let instant = Instant::now();
layout_lines.clear();
for line in shape_lines.iter() {
let layout_i = layout_lines.len();
line.layout(font_size, line_width, &mut layout_lines, layout_i);
}
relayout = false;
relayout_lines.clear();
redraw = true;
let duration = instant.elapsed();
eprintln!("relayout: {:?}", duration);
}
for line_i in relayout_lines.drain(..) {
let instant = Instant::now();
let mut insert_opt = None;
let mut layout_i = 0;
while layout_i < layout_lines.len() {
let layout_line = &layout_lines[layout_i];
if layout_line.line_i == line_i {
if insert_opt.is_none() {
insert_opt = Some(layout_i);
}
layout_lines.remove(layout_i);
} else {
layout_i += 1;
}
}
let shape_line = &shape_lines[line_i.get()];
shape_line.layout(font_size, line_width, &mut layout_lines, insert_opt.unwrap());
redraw = true;
let duration = instant.elapsed();
eprintln!("relayout line {}: {:?}", line_i.get(), duration);
}
if rehit {
let instant = Instant::now();
let mut line_y = line_height;
for (line_i, line) in layout_lines.iter().skip(scroll as usize).enumerate() {
for (line_i, line) in buffer.layout_lines.iter().skip(scroll as usize).enumerate() {
if line_y >= window.height() as i32 {
break;
}
@ -204,7 +229,7 @@ fn main() {
if new_cursor_line != cursor_line || new_cursor_glyph != cursor_glyph {
cursor_line = new_cursor_line;
cursor_glyph = new_cursor_glyph;
redraw = true;
buffer.redraw = true;
}
}
@ -217,13 +242,13 @@ fn main() {
eprintln!("rehit: {:?}", duration);
}
if redraw {
if buffer.redraw {
let instant = Instant::now();
window.set(bg_color);
let mut line_y = line_height;
for (line_i, line) in layout_lines.iter().skip(scroll as usize).enumerate() {
for (line_i, line) in buffer.layout_lines.iter().skip(scroll as usize).enumerate() {
if line_y >= window.height() as i32 {
break;
}
@ -251,7 +276,7 @@ fn main() {
Color::rgba(0xFF, 0xFF, 0xFF, 0x20)
);
let text_line = &text_lines[line.line_i.get()];
let text_line = &buffer.text_lines[line.line_i.get()];
eprintln!("{}, {}: '{}'", glyph.start, glyph.end, &text_line[glyph.start..glyph.end]);
}
}
@ -268,7 +293,7 @@ fn main() {
window.sync();
redraw = false;
buffer.redraw = false;
let duration = instant.elapsed();
eprintln!("redraw: {:?}", duration);
@ -280,90 +305,101 @@ fn main() {
match event.scancode {
orbclient::K_UP => if cursor_line > 0 {
cursor_line -= 1;
redraw = true;
buffer.redraw = true;
},
orbclient::K_DOWN => if cursor_line + 1 < layout_lines.len() {
orbclient::K_DOWN => if cursor_line + 1 < buffer.layout_lines.len() {
cursor_line += 1;
redraw = true;
buffer.redraw = true;
},
orbclient::K_LEFT => {
let line = &layout_lines[cursor_line];
let line = &buffer.layout_lines[cursor_line];
if cursor_glyph > line.glyphs.len() {
cursor_glyph = line.glyphs.len();
redraw = true;
buffer.redraw = true;
}
if cursor_glyph > 0 {
cursor_glyph -= 1;
redraw = true;
buffer.redraw = true;
}
},
orbclient::K_RIGHT => {
let line = &layout_lines[cursor_line];
let line = &buffer.layout_lines[cursor_line];
if cursor_glyph > line.glyphs.len() {
cursor_glyph = line.glyphs.len();
redraw = true;
buffer.redraw = true;
}
if cursor_glyph < line.glyphs.len() {
cursor_glyph += 1;
redraw = true;
buffer.redraw = true;
}
},
orbclient::K_BKSP => {
let line = &layout_lines[cursor_line];
let line = &buffer.layout_lines[cursor_line];
if cursor_glyph > line.glyphs.len() {
cursor_glyph = line.glyphs.len();
redraw = true;
buffer.redraw = true;
}
if cursor_glyph > 0 {
cursor_glyph -= 1;
let glyph = &line.glyphs[cursor_glyph];
let text_line = &mut text_lines[line.line_i.get()];
let text_line = &mut buffer.text_lines[line.line_i.get()];
text_line.remove(glyph.start);
reshape_lines.push(line.line_i);
buffer.reshape_line(line.line_i);
}
},
orbclient::K_DEL => {
let line = &layout_lines[cursor_line];
let line = &buffer.layout_lines[cursor_line];
if cursor_glyph < line.glyphs.len() {
let glyph = &line.glyphs[cursor_glyph];
let text_line = &mut text_lines[line.line_i.get()];
let text_line = &mut buffer.text_lines[line.line_i.get()];
text_line.remove(glyph.start);
reshape_lines.push(line.line_i);
buffer.reshape_line(line.line_i);
}
},
orbclient::K_0 => {
font_size_i = font_size_default;
relayout = true;
buffer.font_size = font_sizes[font_size_i].0 * display_scale;
buffer.line_height = font_sizes[font_size_i].1 * display_scale;
buffer.relayout();
},
orbclient::K_MINUS => if font_size_i > 0 {
font_size_i -= 1;
relayout = true;
buffer.font_size = font_sizes[font_size_i].0 * display_scale;
buffer.line_height = font_sizes[font_size_i].1 * display_scale;
buffer.relayout();
},
orbclient::K_EQUALS => if font_size_i + 1 < font_sizes.len() {
font_size_i += 1;
relayout = true;
buffer.font_size = font_sizes[font_size_i].0 * display_scale;
buffer.line_height = font_sizes[font_size_i].1 * display_scale;
buffer.relayout();
},
_ => (),
}
},
EventOption::TextInput(event) => {
let line = &layout_lines[cursor_line];
let line = &buffer.layout_lines[cursor_line];
if cursor_glyph >= line.glyphs.len() {
match line.glyphs.last() {
Some(glyph) => {
let text_line = &mut text_lines[line.line_i.get()];
let text_line = &mut buffer.text_lines[line.line_i.get()];
text_line.insert(glyph.end, event.character);
cursor_glyph += 1;
reshape_lines.push(line.line_i);
buffer.reshape_line(line.line_i);
},
None => () // TODO
None => {
let text_line = &mut buffer.text_lines[line.line_i.get()];
text_line.push(event.character);
cursor_glyph += 1;
buffer.reshape_line(line.line_i);
}
}
} else {
let glyph = &line.glyphs[cursor_glyph];
let text_line = &mut text_lines[line.line_i.get()];
let text_line = &mut buffer.text_lines[line.line_i.get()];
text_line.insert(glyph.start, event.character);
cursor_glyph += 1;
reshape_lines.push(line.line_i);
buffer.reshape_line(line.line_i);
}
},
EventOption::Mouse(event) => {
@ -381,12 +417,13 @@ fn main() {
}
}
}
EventOption::Resize(_) => {
relayout = true;
EventOption::Resize(event) => {
buffer.line_width = event.width as i32 - line_x * 2;
buffer.relayout();
},
EventOption::Scroll(event) => {
scroll -= event.y * 3;
redraw = true;
buffer.redraw = true;
},
EventOption::Quit(_) => return,
_ => (),